IP address

IP Address


IP stands for Internet Protocol which consists of unique address represented by numbers e.g 192.168.0.5 and can be found on any device connected to a network. Why do we need an IP address?  An IP address allows a computer to send and receive information to and from specific computers in a given network. Likewise how we request any information on internet, while the request that is been sent is been checked from which address the request is coming and it gets our public IP address, if we are unable to access any website it means our ISP(Internet Service Provider) has blocked our IP to get an access of that website.

If you want to check IP of your system you can do the following : 

Step 1 : Press windows key plus R, a dialog box will appear asking you to type a name of a program, folder, document..  

Step 2 : Type cmd

Step 3 : Press ok

Step 4 : Type ipconfig and press enter 







If you are using linux operating system type ifconfig in terminal

Step 5 : Under the wireless LAN adapter Wi-Fi, you will see IPv4 address . . . . . 192.168.0.2 or any digit at the ends, that will be your IP address.


How many types of IP's are there ? 

There are two types of IP's - Public and Private. Public IP is that what we get from our ISP which can also be found out from any browser, just type myip in the search engine click on the very first link and there you can see your public ip is visible. 






Public IP will change depending on the network you are connected in and one or more user can get the same public IP if they are connected on the same network but their private IP's will differ ofcourse. The IP that we saw on command prompt is our private IP or you can say our device's IP. Under private IP we have two more types of IP's i.e static and dynamic. A static IP is one that does not change, once your device is assigned a static IP address the number typically stays until your network architecture changes. A static IP address can be IPv4 or IPv6. For now we usually use IPv4 addresses for permanent address. A dynamic IP are subject to change. Dynamic IP are assigned by DHCP i.e Dynamic Host Configuration Protocol server. We use dynamic IP because IPv4 does not provide enough static IP addresses.

Since we are dealing about IPv4 and IPv6 let's talk about them, there are two versions of IP's. What is IPV4? IPv4 is the first version of IP, which was deployed by ARPANET in 1984. It is most likely to be used in today's time. IPv4 uses 32 bit address scheme allowing to use 2^32  addresses which is more than 4 billion address and it carries 94% of internet traffic.

 What is IPv6? It is the latest version of IP. It was aimed to resolve issues which are associated with IPv4. It has 128 address space which allows 340 undecillion unique address space. Today only 2% of internet traffic is using IPv6 from last year and in india reliance jio is offering IPv6 services since sept 2016.



Learn :  OSI Model












Comments

Post a Comment

Popular

OSI model

Image
OSI model OSI model is an acronym for Open Systems Interconnection is used to define how data is transferred from one system to another system in a computer network. Now you may ask how a network is formed? If two computers are connected to each other with LAN cables, connectors and Network Interface Card forms a network. Since the designing and infrastructure won't be similar of two computers the OSI model was introduced by ISO(International Organization for Standardization) in 1984 for a successful communication between computers or networks. OSI model consists of  7 different layers 1. Application layer 2. Presentation layer 3. Session layer 4. Transport layer 5. Network layer 6. Data link layer 7. Physical layer Now I'm going to give a mnemonic to remember the OSI model Please-Do-Not-Throw-Sausage-Pizza-Away, easy right? Application layer - Application layer does not include applications like chrome, firefox instead it incl...
Read more

Ethical hacking terminologies

Image
Ethical Hacking Terminologies  Following is the list of terms that are frequently used in the field of ethical hacking . If you are not aware of these terms then it would be difficult for you to understand the concept of ethical hacking properly. Thus knowing this will ease your process of going further in this domain. Vulnerability -  A weakness, flaw or loophole in a system, network or any device that can be exploited. Threat -  A danger that can exploit an existing bug or vulnerability to compromise the security of a network system. Attack - An action that is done to extract a sensitive data by getting unauthorized access of a system. Phishing - A process where an attacker creates fake website or url which looks like a legit page but it's to trap the user to get sensitive data. Backdoor -  A hidden entry point which can bypass the authentication process i.e logins and passwords also known as trapdoor. ...
Read more

Goals of cyber security

Image
Goals of cyber security With lots of information being generated by an organization today, as we know the world is going digital, every piece of information is more or less stored in a software and as a user we must ensure our data is been stored in a secured website and as an organization it's their responsibility to keep the data confidential, maintain integrity and available as an when required. Most commonly termed as a CIA triad. Three most important goals of cyber security are as follows :  Confidentiality -  The principle of confidentiality ensures that only the sender and the recipient(s) should be able to access the contents of a message. Confidentiality gets compromised if an unauthorized person gets an access to a message. E.g  User A wants to send message to user B, another user C gets access to this message which is not desired and thus defeats the purpose of confidentiality. let's say A sends a confidential email to B which ...
Read more